Hi Jesper and ESP_Igrr
Can you implement a example with GDMA?? can you share for learn too? because i can't send nothing with this code...
Code: Select all
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <sys/param.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "soc/periph_defs.h"
#include "soc/soc_memory_layout.h"
#include "soc/soc_caps.h"
#include "hal/gdma_ll.h"
#include "hal/gdma_hal.h"
#include "esp_private/periph_ctrl.h"
#include "esp_log.h"
#include "esp_attr.h"
#include "esp_err.h"
#include "C:/Users/sopor/esp/esp-idf/components/esp_hw_support/port/include/esp_async_memcpy_impl.h"
#include "C:\Users\sopor\esp\esp-idf\components\esp_hw_support\dma\gdma_priv.h"
//#include "esp_async_memcpy_impl.h"
#if SOC_APM_SUPPORTED
#include "hal/apm_ll.h"
#endif
IRAM_ATTR static bool async_memcpy_impl_rx_eof_callback(gdma_channel_handle_t dma_chan, gdma_event_data_t *event_data, void *user_data)
{
async_memcpy_impl_t *mcp_impl = (async_memcpy_impl_t *)user_data;
mcp_impl->rx_eof_addr = event_data->rx_eof_desc_addr;
async_memcpy_isr_on_rx_done_event(mcp_impl);
printf("INT GDMA callbacks sucessful \n");
return mcp_impl->isr_need_yield;
}
esp_err_t async_memcpy_impl_init(async_memcpy_impl_t *impl)
{
esp_err_t ret = ESP_OK;
// create TX channel and reserve sibling channel for future use
gdma_channel_alloc_config_t tx_alloc_config =
{
.sibling_chan = NULL,
.direction = GDMA_CHANNEL_DIRECTION_TX,
.flags =
{
.reserve_sibling = 1
}
};
ret = gdma_new_channel(&tx_alloc_config, &impl->tx_channel);
if (ret != ESP_OK)
{
return ret;
}
// create RX channel and specify it should be reside in the same pair as TX
gdma_channel_alloc_config_t rx_alloc_config =
{
.sibling_chan = impl->tx_channel,
.direction = GDMA_CHANNEL_DIRECTION_RX,
.flags =
{
.reserve_sibling = NULL
}
};
ret = gdma_new_channel(&rx_alloc_config, &impl->rx_channel);
if (ret != ESP_OK)
{
return ret;
}
gdma_trigger_t m2m_trigger = GDMA_MAKE_TRIGGER(GDMA_TRIG_PERIPH_M2M, 0);
// get a free DMA trigger ID for memory copy
uint32_t free_m2m_id_mask = 0;
gdma_get_free_m2m_trig_id_mask(impl->tx_channel, &free_m2m_id_mask);
m2m_trigger.instance_id = __builtin_ctz(free_m2m_id_mask);
gdma_connect(impl->rx_channel, m2m_trigger);
gdma_connect(impl->tx_channel, m2m_trigger);
gdma_strategy_config_t strategy_config =
{
.owner_check = true,
.auto_update_desc = true,
};
gdma_transfer_ability_t transfer_ability =
{
.sram_trans_align = impl->sram_trans_align,
.psram_trans_align = impl->psram_trans_align,
};
ret = gdma_set_transfer_ability(impl->tx_channel, &transfer_ability);
if (ret != ESP_OK)
{
return ret;
}
ret = gdma_set_transfer_ability(impl->rx_channel, &transfer_ability);
if (ret != ESP_OK)
{
return ret;
}
gdma_apply_strategy(impl->tx_channel, &strategy_config);
gdma_apply_strategy(impl->rx_channel, &strategy_config);
#if SOC_APM_SUPPORTED
// APM strategy: trusted mode
// TODO: IDF-5354 GDMA for M2M usage only need read and write permissions, we should disable the execute permission by the APM controller
apm_tee_ll_set_master_secure_mode(APM_LL_MASTER_GDMA + m2m_trigger.instance_id, APM_LL_SECURE_MODE_TEE);
#endif // SOC_APM_SUPPORTED
gdma_rx_event_callbacks_t cbs =
{
.on_recv_eof = async_memcpy_impl_rx_eof_callback
};
ret = gdma_register_rx_event_callbacks(impl->rx_channel, &cbs, impl);
return ret;
}
esp_err_t async_memcpy_impl_deinit(async_memcpy_impl_t *impl)
{
gdma_disconnect(impl->rx_channel);
gdma_disconnect(impl->tx_channel);
gdma_del_channel(impl->rx_channel);
gdma_del_channel(impl->tx_channel);
return ESP_OK;
}
esp_err_t async_memcpy_impl_start(async_memcpy_impl_t *impl, intptr_t outlink_base, intptr_t inlink_base)
{
gdma_start(impl->rx_channel, inlink_base);
gdma_start(impl->tx_channel, outlink_base);
return ESP_OK;
}
esp_err_t async_memcpy_impl_stop(async_memcpy_impl_t *impl)
{
gdma_stop(impl->rx_channel);
gdma_stop(impl->tx_channel);
return ESP_OK;
}
esp_err_t async_memcpy_impl_restart(async_memcpy_impl_t *impl)
{
gdma_append(impl->rx_channel);
gdma_append(impl->tx_channel);
return ESP_OK;
}
esp_err_t async_memcpy_impl_new_etm_event(async_memcpy_impl_t *impl, async_memcpy_etm_event_t event_type, esp_etm_event_handle_t *out_event)
{
if (event_type == ASYNC_MEMCPY_ETM_EVENT_COPY_DONE) {
// use the RX EOF to indicate the async memcpy done event
gdma_etm_event_config_t etm_event_conf = {
.event_type = GDMA_ETM_EVENT_EOF,
};
return gdma_new_etm_event(impl->rx_channel, &etm_event_conf, out_event);
} else {
return ESP_ERR_NOT_SUPPORTED;
}
}
bool async_memcpy_impl_is_buffer_address_valid(async_memcpy_impl_t *impl, void *src, void *dst)
{
bool valid = true;
if (esp_ptr_external_ram(dst)) {
if (impl->psram_trans_align) {
valid = valid && (((intptr_t)dst & (impl->psram_trans_align - 1)) == 0);
}
} else {
if (impl->sram_trans_align) {
valid = valid && (((intptr_t)dst & (impl->sram_trans_align - 1)) == 0);
}
}
return valid;
}
extern "C" void app_main(void)
{
esp_err_t ret;
async_memcpy_impl_t M2M_gmda_test;
gdma_tx_channel_t tx_ch;
gdma_rx_channel_t rx_ch;
char source_buf[] = "hola mundo";
char receiv_buf[] = " ";//(char *)malloc(sizeof(source_buf)*sizeof(char));
ret = async_memcpy_impl_init(&M2M_gmda_test);
if(ret==ESP_OK)
{
printf("M2M GDMA init sucesful! \n");
}
else
{
printf("Error in M2M GDMA init! \n");
}
tx_ch.user_data = &source_buf[0];
rx_ch.user_data = &receiv_buf[0];
async_memcpy_impl_start(&M2M_gmda_test, (intptr_t)&tx_ch.base, (intptr_t)&rx_ch.base);
while(1)
{
vTaskDelay(pdMS_TO_TICKS(1000));
printf("source buffer = %s \n",source_buf);
printf("receive buffer = %s \n",receiv_buf);
}
}